Intrusive igneous rocks / produced by Intelecom.

Explains that most magma does not extrude onto Earth's surface but cools slowly deep inside Earth. This magma seeps into crevices in existing rock to form intrusive igneous rocks. Experts provide a graphic illustration of this process and explain the types and textures of rocks such as granite,...

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Bibliographic Details
Corporate Authors: INTELECOM Intelligent Telecommunications (Firm), Annenberg/CPB
Other Authors: Sadd, James, Gilfillan, David
Format: Video
Language:English
Published: South Burlington, Vt. : Annenberg/CPB, ©1992.
Series:Earth revealed ; 14.
Subjects:
Online Access:Click for online access